Journal-bearing for car-trucks



(No Model.) I 2 Sheets-Sheet -1 L. PORTER. JOURNAL BEARING FOR OARTRUGKS.

No. 495,189. Patented Apr. 11, 1893.

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(No Model.) 2 Sheets-Sheet 2.

LPQRTER. JOURNAL BEARING FOR GAR TRUCKS.

No. 495,189. Patented A r-11, 1893.

UNITED STATES PATENT OFFICE.

LANSING PORTER, OF AUBURN, NEYV YORK.

JOURNAL-BEARING FOR CAR-TRUCKS.

SPECIFICATION forming part of Letters Patent Nb. 495,189, dated April11, 1893. Application filed November 15, 1892. $erial No. 452,078. (Nomodel.)

To all whom it may concern:

Be itknown that I, LANSING PORTER, a resident of Auburn, in the countyof Cayuga and State of New York, have invented certain new and usefulImprovements in J our- Dal-Bearings; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to an improvement in journal bearings,its objectbeing to construct the bearings for a car axle (or other revolubledevice) in such manner that it will theoretically be free from frictionand run without the use of oil.

A further object is to provide devices whereby to effectually receivethe forward and backward pressure caused by starting and stopping of thecar,on grades and by the brakes.

Afurther object is to producea bearing for a car axle,- which shall besimple in construction and eifectual in the performance of itsfunctions.

With these objects in view the invention consists in certain novelfeatures of construction and combinations and arrangements of parts ashereinafter set forth and pointed out in the claims.

In the accompanying drawings: Figure 1 is a plan View ofa truckembodying my improvements. Fig. 2 is a sectional view, on the line 03-00of Fig. 1. Fig. 3 is a sectional view on the line zz of Fig. 1.

A represents a bolster, to which the side braces of truss bars B aresecured. To the ends of the braces B, horizontal plates 0 are secured,the under face of each of which in proximity to its ends, is made with acircular recess a for a purpose which will be presently explained.

To the ends of the bolster A bars D are secured. Each bar D may be madein two sec tions and the inner ends of each section of each bar D arefirmly attached in any suitable manner to the ends of the bolster andthe outer ends are bifurcated or bent to receive journal boxes E, a boltb being employed to connect the forked ends of the bars D and adapted toretain the journal boxes in position.

Each box E is a simple thimble with a closed end and, internally, is anexact circle. Projecting into the boxes E are the ends of the axles E ofthe truck, each of which is made with an annular recess e. Rollers f ofalternately varying sizes, operate in the recesses e and against theinner walls of the boxes E,said recessesin the axle being slightly lessin depth than the diameters of the largest rollers. The ends of theserollers are entirely free from pressure, friction and wear, as ampleprovision is madeelsewhere for receiving the side thrust.

By the employment of theconstruction and arrangement of bearings abovedescribed, efficient means will be provided for receiving the forwardand backward pressure caused by starting and st0pping,by grades and bythe brakes. The boxes E are held rigidly in position simply by thehorizontal bars D to the bolster, no provision being made for verticalpressure on said bearings, as they are to receive none. J

Gar wheels F are secured to the axles E in proximity to the journalboxes E. I prefer to use wheels in which the inside face is concave andthe outside face convex, so that the weight which will be brought tobear on the axle between the wheels, will be thrown very nearly verticalover the rails. A yoke g is secured to each plate 0 and embraces theaxles E. On the under side of each plate 0 a block 9' is located, beingeither made integral therewith or secured thereto, as desired. To eachof the blocks g, a plate or bar F is secured and extends to points aboutcoincident with the centers of the circular recesses a in the underfaces of the plates 0, where they are perforated for the reception ofbolts h. The bolts it also pass through the plates 0 and have disksGlooselymounted on them,- said bolts being screwthreaded on their endsfor the reception of suitable nuts. The disks G are made with plain,flat top and bottom faces and between said disks and in the recesses aof the plates 0, circular series of rollers i, of varying sizes, arelocated. The peripheries of the disks are adapted to run on acircularshoulder j on the inner face of the wheels. Thus it will be seen thatthe disks G will be located between the wheels of the truck,receivemotion from the same and that the side thrust will be received by theshoulders j on the wheels. The bottom faces of disks G bear upon collarskrnade integral with or secured to the axles E, said collars being ofsnfficient thickness so that a straight bar or plate F can connect thelower ends of the disk bolts without contact with the rotary shaft oraxle.

It has heretofore been maintained that the under face of the disk andthe collar on the shaft ought to be cone-shaped and constructed at suchan angle as to avoid movement between the contact faces of said parts.Butit is obvious that the immense weight on such an incline would resultin constant and severe pressure against the center bolt of the disk. Forthis reason I prefer to employ a disk having a flat'or horizontal face;and by making the face of the collar that engages the disk, veryslightly curved or spherical in form, it will be impossible for the diskto rest on the whole width of the collar at any one time, therebydiminishing the twisting movement and friction between the parts, andalso result in a free and easy movement of the whole truck in thetwisting it receives from the-inequalities in the rails.

By constructing and arranging bearings between the wheels as abovedescribed, a single stationary plate employed between each pair ofwheels will cover both disks and will extend from wheel to wheel, eachend being held rigidly in position by truss irons or braces from thebolster. The groove for the rollers (or spheres if it be desired toemploy the same) will be wholly in the under face of the stationaryplate, leaving the upper face of the disk a horizontal plane to avoidthe accumulation of dirt. ple plates of steel, smooth on both faces andof uniform thickness throughout.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination with astationary plate, a shaft or axle and wheelscarried by the latter, of revoluble disks carried by said stationaryplate and adapted to bear against the inner faces of the wheels, andtapering rollers inserted between said stationary plate and. the disks,substantially as set forth.

2. The combination with a stationary plate,

a shaft or axle and wheels carried by the latter, of collars on saidshaft or axle said collars having curved outer surfaces, revoluble diskscarried by the stationary plate and This leaves the disks G simadaptedto bear on the inner faces of the wheels and on the collars on the shaftor axle, and anti-friction rollers inserted between 3. The combinationwith a stationary plate,v

a shaft or axle and wheels carried by the latter, of collars carried bysaid shaft or axle and having curved or spherical faces, revoluble diskscarried by the stationary plate and having flat or horizontal underfaces adapted to bear on said collars and anti-friction rollers insertedbetween said stationary plate and revoluble disks, substantially as setforth. 7 7 7 4. The combination with a stationary plate having inclinedannular groove, a shaft or axle and wheels carried by said stationaryplate, of revoluble disks having flat horizontal top and bottom faces,carried by said stationary plate between the wheels, said revo lubledisks being adapted to receive motion from said wheels and the shaft oraxle, and tapering anti-friction rollers inserted in the groove betweensaid stationary plate and revoluble disks, substantially as set forth.

5. The combination with a stationary plate, a shaft or axle and wheelscarried by said shaft or axle, said stationary plate having annularinclining recesses in its under face, of revoluble disks carried by saidstationary plate, said revoluble disks having flat top and bottom faces,and adapted to receive motion from the wheels and axle, and taperingantifriction rollers inserted in the recesses in the under face of thestationary plate and over the revoluble disks, substantially as setforth.

6. The combination with a bolster, wheels and means for causing theweight to bear on the axles between the wheels, of bars secured to theends of the bolster, boxes carried by the ends of said bars and having acircular interior for the reception of the ends of the axle, said axlebeing provided at their ends with annular grooves, and anti-frictionrollers inserted in said annular grooves, said rollers being alternatelyof varying sizes, substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

LANSING PORTER.

\Vitnesses:

A. L. HEMINGWAY, S. M. EDDY.

IOC

